Received: 23 August 2018
Accepted: 29 January 2019
First Online: 6 February 2019
Ethics approval and consent to participate
: The study was approved by the Ethical Committee of Alpha Vision Center. The study adhered to the tenets of the Declaration of Helsinki. A written informed consent was obtained from every patient after explanation of the procedure and the possible consequences of the surgery.
: Not applicable
: The authors declare that they have no competing interests.
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